rockbox/apps/bookmark.c

 /***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 *
 * Copyright (C) 2003 by Benjamin Metzler
 *
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

#include "applimits.h"
#include "lcd.h"
#include "button.h"
#include "usb.h"
#include "mpeg.h"
#include "wps.h"
#include "settings.h"
#include "bookmark.h"
#include "dir.h"
#include "status.h"
#include "system.h"
#include "errno.h"
#include "icons.h"
#include "atoi.h"
#include "string.h"
#include "menu.h"
#include "lang.h"
#include "screens.h"
#include "status.h"
#include "debug.h"
#include "kernel.h"
#include "sprintf.h"
#include "talk.h"

#define MAX_BOOKMARKS 10
#define MAX_BOOKMARK_SIZE  350
#define RECENT_BOOKMARK_FILE ROCKBOX_DIR "/most-recent.bmark"

static bool  add_bookmark(char* bookmark_file_name, char* bookmark);
static bool  bookmark_load_menu(void);
static bool  check_bookmark(char* bookmark);
static char* create_bookmark(void);
static bool  delete_bookmark(char* bookmark_file_name, int bookmark_id);
static void  display_bookmark(char* bookmark,
                              int bookmark_id, 
                              int bookmark_count);
static void  say_bookmark(char* bookmark,
                          int bookmark_id);
static bool  generate_bookmark_file_name(char *in,
                                         char *out,
                                         unsigned int max_length);
static char* get_bookmark(char* bookmark_file, int bookmark_count);
static bool  parse_bookmark(char *bookmark,
                            int *resume_index,
                            int *resume_offset,
                            int *resume_seed,
                            int *resume_first_index,
                            char* resume_file,
                            unsigned int resume_file_size,
                            int* ms,
                            int * repeat_mode,
                            bool *shuffle,
                            char* file_name,
                            unsigned int max_file_name_size);
static char* select_bookmark(char* bookmark_file_name);
static bool  system_check(void);
static bool  write_bookmark(bool create_bookmark_file);
static int   get_bookmark_count(char* bookmark_file_name);

static char global_temp_buffer[MAX_PATH+1];
static char global_bookmark_file_name[MAX_PATH];
static char global_read_buffer[MAX_BOOKMARK_SIZE];
static char global_bookmark[MAX_BOOKMARK_SIZE];

/* ----------------------------------------------------------------------- */
/* Displays the bookmark menu options for the user to decide.  This is an  */
/* interface function.                                                     */
/* ----------------------------------------------------------------------- */
bool bookmark_menu(void)
{
    int m;
    bool result;

    struct menu_item items[] = {
        { STR(LANG_BOOKMARK_MENU_CREATE), bookmark_create_menu},
        { STR(LANG_BOOKMARK_MENU_LIST), bookmark_load_menu},
        { STR(LANG_BOOKMARK_MENU_RECENT_BOOKMARKS), bookmark_mrb_load},
    };

    m=menu_init( items, sizeof items / sizeof(struct menu_item), NULL,
                 NULL, NULL, NULL);

#ifdef HAVE_LCD_CHARCELLS
    status_set_param(true);
#endif
    result = menu_run(m);
#ifdef HAVE_LCD_CHARCELLS
    status_set_param(false);
#endif
    menu_exit(m);

    settings_save();

    return result;
}

/* ----------------------------------------------------------------------- */
/* This is the interface function from the main menu.                      */
/* ----------------------------------------------------------------------- */
bool bookmark_create_menu(void)
{
    write_bookmark(true);
    return false;
}

/* ----------------------------------------------------------------------- */
/* This function acts as the load interface from the main menu             */
/* This function determines the bookmark file name and then loads that file*/
/* for the user.  The user can then select a bookmark to load.             */
/* If no file/directory is currently playing, the menu item does not work. */
/* ----------------------------------------------------------------------- */
static bool bookmark_load_menu(void)
{
    bool success = true;
    int  offset;
    int  seed;
    int  index;
    char* bookmark;

    if(!system_check())
        return false;
    else
    {
        char* name = playlist_get_name(NULL, global_temp_buffer,
                                       sizeof(global_temp_buffer));
        if (generate_bookmark_file_name(name,
                                        global_bookmark_file_name,
                                        sizeof(global_bookmark_file_name)))
        {
            bookmark = select_bookmark(global_bookmark_file_name);
            if (!bookmark)
                return false;  /* User exited without selecting a bookmark */

            success = parse_bookmark(bookmark,
                                     &index,
                                     &offset,
                                     &seed,
                                     NULL,
                                     global_temp_buffer,
                                     sizeof(global_temp_buffer),
                                     NULL,
                                     &global_settings.repeat_mode,
                                     &global_settings.playlist_shuffle,
                                     NULL, 0);
        }
        else
        {
            /* something bad happened while creating bookmark name*/
            success = false;
        }

        if (success)
            bookmark_play(global_temp_buffer, index, offset, seed);
    }

    return success;
}

/* ----------------------------------------------------------------------- */
/* Gives the user a list of the Most Recent Bookmarks.  This is an         */
/* interface function                                                      */
/* ----------------------------------------------------------------------- */
bool bookmark_mrb_load()
{
    bool success = true;
    int  offset;
    int  seed;
    int  index;
    char* bookmark;

    bookmark = select_bookmark(RECENT_BOOKMARK_FILE);
    if (!bookmark)
        return false;  /* User exited without selecting a bookmark */

    success = parse_bookmark(bookmark,
                             &index,
                             &offset,
                             &seed,
                             NULL,
                             global_temp_buffer,
                             sizeof(global_temp_buffer),
                             NULL,
                             &global_settings.repeat_mode,
                             &global_settings.playlist_shuffle,
                             NULL, 0);

    if (success)
        bookmark_play(global_temp_buffer, index, offset, seed);

    return success;
}


/* ----------------------------------------------------------------------- */
/* This function handles an autobookmark creation.  This is an interface   */
/* function.                                                               */
/* ----------------------------------------------------------------------- */
bool bookmark_autobookmark(void)
{
    /* prompts the user as to create a bookmark */
    bool done = false;
    int  key = 0;

    if (!system_check())
        return false;

    mpeg_pause();    /* first pause playback */
    switch (global_settings.autocreatebookmark)
    {
        case BOOKMARK_YES:
            return write_bookmark(true);

        case BOOKMARK_NO:
            return false;

        case BOOKMARK_RECENT_ONLY_YES:
            return write_bookmark(false);
    }

    /* Prompting user to confirm bookmark creation */
    lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
    lcd_puts(0,0, str(LANG_AUTO_BOOKMARK_QUERY));
    lcd_puts(0,1, str(LANG_CONFIRM_WITH_PLAY_RECORDER));
    lcd_puts(0,2, str(LANG_CANCEL_WITH_ANY_RECORDER));
#else
    status_draw(false);
    lcd_puts(0,0, str(LANG_AUTO_BOOKMARK_QUERY));
    lcd_puts(0,1,str(LANG_RESUME_CONFIRM_PLAYER));
#endif
    lcd_update();

    while (!done)
    {
        /* Wait for a key to be pushed */
        key = button_get(true);
        switch (key)
        {
            case BUTTON_DOWN | BUTTON_REL:
            case BUTTON_ON | BUTTON_REL:
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_OFF | BUTTON_REL:
            case BUTTON_RIGHT | BUTTON_REL:
            case BUTTON_UP | BUTTON_REL:
#endif
            case BUTTON_LEFT | BUTTON_REL:
                done = true;
                break;

            case BUTTON_PLAY | BUTTON_REL:
                if (global_settings.autocreatebookmark ==
                    BOOKMARK_RECENT_ONLY_ASK)
                    write_bookmark(false);
                else
                    write_bookmark(true);
                done = true;
                break;

            case SYS_USB_CONNECTED:
                usb_screen();
#ifdef HAVE_LCD_CHARCELLS
                status_set_param(true);
#endif
                return false;
        }
    }
    return true;
}

/* ----------------------------------------------------------------------- */
/* This function takes the current current resume information and writes   */
/* that to the beginning of the bookmark file.                             */
/* This file will contain N number of bookmarks in the following format:   */
/* resume_index*resume_offset*resume_seed*resume_first_index*              */
/* resume_file*milliseconds*MP3 Title*                                     */
/* ------------------------------------------------------------------------*/
static bool write_bookmark(bool create_bookmark_file)
{
    bool   success=false;
    char*  bookmark;

    if (!system_check())
       return false; /* something didn't happen correctly, do nothing */

    bookmark = create_bookmark();
    if (!bookmark)
       return false; /* something didn't happen correctly, do nothing */

    if (global_settings.usemrb)
        success = add_bookmark(RECENT_BOOKMARK_FILE, bookmark);


    /* writing the bookmark */
    if (create_bookmark_file)
    {
        char* name = playlist_get_name(NULL, global_temp_buffer,
                                       sizeof(global_temp_buffer));
        if (generate_bookmark_file_name(name,
                                        global_bookmark_file_name,
                                        sizeof(global_bookmark_file_name)))
        {
            success = add_bookmark(global_bookmark_file_name, bookmark);
        }
    }

    if (success)
        splash(HZ, true, str(LANG_BOOKMARK_CREATE_SUCCESS));
    else
        splash(HZ, true, str(LANG_BOOKMARK_CREATE_FAILURE));

    return true;
}

/* ----------------------------------------------------------------------- */
/* This function adds a bookmark to a file.                                */
/* ------------------------------------------------------------------------*/
static bool add_bookmark(char* bookmark_file_name, char* bookmark)
{
    int    temp_bookmark_file = 0;
    int    bookmark_file = 0;
    int    bookmark_count = 0;
    char*  playlist = NULL;
    char*  cp;
    char*  tmp;
    int    len = 0;
    bool   unique = false;

    /* Opening up a temp bookmark file */
    snprintf(global_temp_buffer, sizeof(global_temp_buffer),
             "%s.tmp", bookmark_file_name);
    temp_bookmark_file = open(global_temp_buffer,
                              O_WRONLY | O_CREAT | O_TRUNC);
    if (temp_bookmark_file < 0)
        return false; /* can't open the temp file */

    if (!strcmp(bookmark_file_name,RECENT_BOOKMARK_FILE) &&
        (global_settings.usemrb == BOOKMARK_UNIQUE_ONLY))
    {
        playlist = strchr(bookmark,'/');
        cp = strrchr(bookmark,';');
        len = cp - playlist;
        unique = true;
    }

    /* Writing the new bookmark to the begining of the temp file */
    write(temp_bookmark_file, bookmark, strlen(bookmark));
    write(temp_bookmark_file, "\n", 1);
    bookmark_count++;

    /* Reading in the previous bookmarks and writing them to the temp file */
    bookmark_file = open(bookmark_file_name, O_RDONLY);
    if (bookmark_file >= 0)
    {
        while (read_line(bookmark_file, global_read_buffer,
                         sizeof(global_read_buffer)))
        {
            /* The MRB has a max of MAX_BOOKMARKS in it */
            /* This keeps it from getting too large */
            if ((strcmp(bookmark_file_name,RECENT_BOOKMARK_FILE)==0))
            {
                if(bookmark_count >= MAX_BOOKMARKS)
                break;
            }
                        
            cp  = strchr(global_read_buffer,'/');
            tmp = strrchr(global_read_buffer,';');
            if (check_bookmark(global_read_buffer) &&
               (!unique || len != tmp -cp || strncmp(playlist,cp,len)))
            {
                bookmark_count++;
                write(temp_bookmark_file, global_read_buffer,
                      strlen(global_read_buffer));
                write(temp_bookmark_file, "\n", 1);
            }
        }
        close(bookmark_file);
    }
    close(temp_bookmark_file);

    remove(bookmark_file_name);
    rename(global_temp_buffer, bookmark_file_name);

    return true;
}


/* ----------------------------------------------------------------------- */
/* This function takes the system resume data and formats it into a valid  */
/* bookmark.                                                               */
/* ----------------------------------------------------------------------- */
static char* create_bookmark()
{
    int resume_index = 0;
    char *file;

    /* grab the currently playing track */
    struct mp3entry *id3 = mpeg_current_track();
    if(!id3)
        return NULL;

    /* Get some basic resume information */
    /* queue_resume and queue_resume_index are not used and can be ignored.*/
    playlist_get_resume_info(&resume_index);

    /* Get the currently playing file minus the path */
    /* This is used when displaying the available bookmarks */
    file = strrchr(id3->path,'/');
    if(NULL == file)
        return NULL;

    /* create the bookmark */
    snprintf(global_bookmark, sizeof(global_bookmark),
             "%d;%d;%d;%d;%d;%d;%d;%s;%s",
             resume_index,
             id3->offset,
             playlist_get_seed(NULL),
             0,
             id3->elapsed,
             global_settings.repeat_mode,
             global_settings.playlist_shuffle,
             playlist_get_name(NULL, global_temp_buffer,
                sizeof(global_temp_buffer)),
             file+1);

    /* checking to see if the bookmark is valid */
    if (check_bookmark(global_bookmark))
        return global_bookmark;
    else
        return NULL;
}

static bool check_bookmark(char* bookmark)
{
    return parse_bookmark(bookmark,
                          NULL,NULL,NULL, NULL,
                          NULL,0,NULL,NULL,
                          NULL, NULL, 0);
}

/* ----------------------------------------------------------------------- */
/* This function will determine if an autoload is necessary.  This is an   */
/* interface function.                                                     */
/* ------------------------------------------------------------------------*/
bool bookmark_autoload(char* file)
{
    int  key;
    int  fd;
    bool done = false;

    if(global_settings.autoloadbookmark == BOOKMARK_NO)
        return false;

    /*Checking to see if a bookmark file exists.*/
    if(!generate_bookmark_file_name(file,
                                   global_bookmark_file_name,
                                   sizeof(global_bookmark_file_name)))
    {
        return false;
    }

    fd = open(global_bookmark_file_name, O_RDONLY);
    if(fd<0)
        return false;
    if(-1 == lseek(fd, 0, SEEK_END))
    {
        close(fd);
        return false;
    }
    close(fd);

    if(global_settings.autoloadbookmark == BOOKMARK_YES)
    {
        return bookmark_load(global_bookmark_file_name, true);
    }
    else
    {
        while (button_get(false)); /* clear button queue */
        /* Prompting user to confirm bookmark load */
        lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
        lcd_puts_scroll(0,0, str(LANG_BOOKMARK_AUTOLOAD_QUERY));
        lcd_puts(0,1, str(LANG_CONFIRM_WITH_PLAY_RECORDER));
        lcd_puts(0,2, str(LANG_BOOKMARK_SELECT_LIST_BOOKMARKS));
        lcd_puts(0,3, str(LANG_CANCEL_WITH_ANY_RECORDER));
#else
        status_draw(false);
        lcd_puts_scroll(0,0, str(LANG_BOOKMARK_AUTOLOAD_QUERY));
        lcd_puts(0,1,str(LANG_RESUME_CONFIRM_PLAYER));
#endif
        lcd_update();

        sleep(100);

        while(!done)
        {
            /* Wait for a key to be pushed */
            while (button_get(false)); /* clear button queue */
            key = button_get(true);
            switch(key)
            {
                default:
                    return false;
#ifdef HAVE_LCD_BITMAP
                case BUTTON_DOWN:
                    return bookmark_load(global_bookmark_file_name, false);
#endif
                case BUTTON_PLAY:
                    return bookmark_load(global_bookmark_file_name, true);
                case SYS_USB_CONNECTED:
                    status_set_playmode(STATUS_STOP);
                    usb_screen();
#ifdef HAVE_LCD_CHARCELLS
                    status_set_param(true);
#endif
                    return true;
            }
        }
        return true;
    }
}

/* ----------------------------------------------------------------------- */
/* This function loads the bookmark information into the resume memory.    */
/* This is an interface function.                                          */
/* ------------------------------------------------------------------------*/
bool bookmark_load(char* file, bool autoload)
{
    int  fd;
    bool success = true;
    int  offset;
    int  seed;
    int  index;
    char* bookmark = NULL;;

    if(autoload)
    {
        fd = open(file, O_RDONLY);
        if(fd >= 0)
        {
            if(read_line(fd, global_read_buffer, sizeof(global_read_buffer)))
                bookmark=global_read_buffer;
            close(fd);
        }
    }
    else
    {
        /* This is not an auto-load, so list the bookmarks */
        bookmark=select_bookmark(file);
        if(!bookmark)
            return true;  /* User exited without selecting a bookmark */
    }

    if(bookmark)
    {
        success = parse_bookmark(bookmark,
                                &index,
                                &offset,
                                &seed,
                                NULL,
                                global_temp_buffer,
                                sizeof(global_temp_buffer),
                                NULL,
                                &global_settings.repeat_mode,
                                &global_settings.playlist_shuffle,
                                NULL, 0);

    }

    if(success)
        bookmark_play(global_temp_buffer,index,offset,seed);

    return success;
}


static int get_bookmark_count(char* bookmark_file_name)
{
    int read_count = 0;
    int file = open(bookmark_file_name, O_RDONLY);

    if(file < 0)
        return -1;

    /* Get the requested bookmark */
    while(read_line(file, global_read_buffer, sizeof(global_read_buffer)))
    {
        if(check_bookmark(global_read_buffer))
            read_count++;
    }
    
    close(file);
    return read_count;
 
    
}


/* ----------------------------------------------------------------------- */
/* This displays a the bookmarks in a file and allows the user to          */
/* select one to play.                                                     */
/* ------------------------------------------------------------------------*/
static char* select_bookmark(char* bookmark_file_name)
{
    int bookmark_id = 0;
    int bookmark_id_prev = -1;
    int  key = 0;
    char* bookmark = NULL;
    int bookmark_count = 0;

#ifdef HAVE_LCD_BITMAP
    lcd_setmargins(0, 0);
#endif

    while (button_get(false)); /* clear button queue */
    bookmark_count = get_bookmark_count(bookmark_file_name);

    while(true)
    {
        if(bookmark_id < 0)
            bookmark_id = bookmark_count -1;
        if(bookmark_id == bookmark_count)
            bookmark_id = 0;

        if (bookmark_id != bookmark_id_prev)
        {
            bookmark = get_bookmark(bookmark_file_name, bookmark_id);
            bookmark_id_prev = bookmark_id;
        }
        
        if (!bookmark)
        {
            /* if there were no bookmarks in the file, delete the file and exit. */
            if(bookmark_id == 0)
            {
                splash(HZ, true, str(LANG_BOOKMARK_LOAD_EMPTY));
                remove(bookmark_file_name);
                while (button_get(false)); /* clear button queue */
                return NULL;
            }
            else
            {
               bookmark_id_prev = bookmark_id;
               bookmark_id--;
            }
        }
        else
        {
            display_bookmark(bookmark, bookmark_id, bookmark_count);
            if (global_settings.talk_menu) /* for voice UI */
                say_bookmark(bookmark, bookmark_id);
        }

        /* waiting for the user to click a button */
        key = button_get(true);
        switch(key)
        {
            case BUTTON_PLAY:
                /* User wants to use this bookmark */
#ifdef HAVE_LCD_BITMAP
                if (global_settings.statusbar)
                    lcd_setmargins(0, STATUSBAR_HEIGHT);
                else
                    lcd_setmargins(0, 0);
#endif
                return bookmark;

            case BUTTON_ON | BUTTON_PLAY:
                /* User wants to delete this bookmark */
                delete_bookmark(bookmark_file_name, bookmark_id);
                bookmark_id_prev=-1;
                bookmark_id--;
                bookmark_count--;
                while (button_get(false)); /* clear button queue */
                break;

            case SYS_USB_CONNECTED:
                usb_screen();
#ifdef HAVE_LCD_CHARCELLS
                status_set_param(true);
#endif
                return NULL;
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_UP:
                bookmark_id--;
                break;

            case BUTTON_DOWN:
                bookmark_id++;
                break;

            case BUTTON_LEFT:
            case BUTTON_OFF:
#ifdef HAVE_LCD_BITMAP
                if (global_settings.statusbar)
                    lcd_setmargins(0, STATUSBAR_HEIGHT);
                else
                    lcd_setmargins(0, 0);
#endif
                return NULL;
#else
            case BUTTON_LEFT:
                bookmark_id--;
                break;

            case BUTTON_RIGHT:
                bookmark_id++;
                break;

            case BUTTON_STOP:
                return NULL;
#endif
        }
    }

    return NULL;
}


/* ----------------------------------------------------------------------- */
/* This function takes a location in a bookmark file and deletes that      */
/* bookmark.                                                               */
/* ------------------------------------------------------------------------*/
static bool delete_bookmark(char* bookmark_file_name, int bookmark_id)
{
    int temp_bookmark_file = 0;
    int bookmark_file = 0;
    int bookmark_count = 0;

    /* Opening up a temp bookmark file */
    snprintf(global_temp_buffer, sizeof(global_temp_buffer),
             "%s.tmp", bookmark_file_name);
    temp_bookmark_file = open(global_temp_buffer,
                              O_WRONLY | O_CREAT | O_TRUNC);
    bookmark_file = open(bookmark_file_name, O_RDONLY);

    if (temp_bookmark_file < 0 || bookmark_file < 0)
        return false; /* can't open one of the files */

    /* Reading in the previous bookmarks and writing them to the temp file */
    while (read_line(bookmark_file, global_read_buffer,
                     sizeof(global_read_buffer)))
    {
        /* The MRB has a max of MAX_BOOKMARKS in it */
        /* This keeps it from getting too large */
        if ((strcmp(bookmark_file_name,RECENT_BOOKMARK_FILE)==0))
        {
            if(bookmark_count >= MAX_BOOKMARKS)
            break;
        }
        
        if (check_bookmark(global_read_buffer))
        {
            if (bookmark_id != bookmark_count)
            {
                write(temp_bookmark_file, global_read_buffer,
                      strlen(global_read_buffer));
                write(temp_bookmark_file, "\n", 1);
            }
            bookmark_count++;
        }
    }

    close(bookmark_file);
    close(temp_bookmark_file);

    remove(bookmark_file_name);
    rename(global_temp_buffer, bookmark_file_name);

    return true;
}

/* ----------------------------------------------------------------------- */
/* This function parses a bookmark and displays it for the user.           */
/* ------------------------------------------------------------------------*/
static void display_bookmark(char* bookmark,
                             int bookmark_id,
                             int bookmark_count)
{
    int  resume_index = 0;
    int  ms = 0;
    int  repeat_mode = 0;
    bool playlist_shuffle = false;
    char MP3_file_name[45];
    int  len;
    char *dot;

    /* getting the index and the time into the file */
    parse_bookmark(bookmark,
                   &resume_index, NULL, NULL, NULL, NULL, 0,
                   &ms, &repeat_mode, &playlist_shuffle,
                   MP3_file_name, sizeof(MP3_file_name));

    lcd_clear_display();
    lcd_stop_scroll();

#ifdef HAVE_LCD_BITMAP
    /* bookmark shuffle and repeat states*/
    switch (repeat_mode)
    {
        case REPEAT_ONE:
            statusbar_icon_play_mode(Icon_RepeatOne);
            break;

        case REPEAT_ALL:
            statusbar_icon_play_mode(Icon_Repeat);
            break;
    }
    if(playlist_shuffle)
        statusbar_icon_shuffle();

    /* File Name */
    len=strlen(MP3_file_name);
    if (len>3)
      dot=strrchr(MP3_file_name + len - 4, '.');
    else
      dot=NULL;
    if (dot)
        *dot='\0';
    lcd_puts_scroll(0, 0, MP3_file_name);
    if (dot)
        *dot='.';

    /* bookmark number */
    snprintf(global_temp_buffer, sizeof(global_temp_buffer), "%s: %2d/%2d",
             str(LANG_BOOKMARK_SELECT_BOOKMARK_TEXT),
             bookmark_id + 1, bookmark_count);
    lcd_puts_scroll(0, 1, global_temp_buffer);

    /* bookmark resume index */
    snprintf(global_temp_buffer, sizeof(global_temp_buffer), "%s: %2d",
             str(LANG_BOOKMARK_SELECT_INDEX_TEXT), resume_index+1);
    lcd_puts_scroll(0, 2, global_temp_buffer);

    /* elapsed time*/
    snprintf(global_temp_buffer, sizeof(global_temp_buffer), "%s: %d:%02d",
             str(LANG_BOOKMARK_SELECT_TIME_TEXT),
             ms / 60000,
             ms % 60000 / 1000);
    lcd_puts_scroll(0, 3, global_temp_buffer);

    /* commands */
    lcd_puts_scroll(0, 4, str(LANG_BOOKMARK_SELECT_PLAY));
    lcd_puts_scroll(0, 5, str(LANG_BOOKMARK_SELECT_EXIT));
    lcd_puts_scroll(0, 6, str(LANG_BOOKMARK_SELECT_DELETE));
#else
    (void)bookmark_id;
    len=strlen(MP3_file_name);
    if (len>3)
      dot=strrchr(MP3_file_name+len-4,'.');
    else
      dot=NULL;
    if (dot)
        *dot='\0';
    snprintf(global_temp_buffer, sizeof(global_temp_buffer),
             "%2d, %d:%02d, %s,",
             (bookmark_count+1),
             ms / 60000,
             ms % 60000 / 1000,
             MP3_file_name);
    status_draw(false);
    lcd_puts_scroll(0,0,global_temp_buffer);
    lcd_puts(0,1,str(LANG_RESUME_CONFIRM_PLAYER));
    if (dot)
        *dot='.';
#endif
    lcd_update();
}


/* ----------------------------------------------------------------------- */
/* This function parses a bookmark, says the voice UI part of it.          */
/* ------------------------------------------------------------------------*/
static void say_bookmark(char* bookmark,
                         int bookmark_id)
{
    int resume_index;
    int ms;
    char dir[MAX_PATH];
    bool enqueue = false; /* only the first voice is not queued */

    parse_bookmark(bookmark,
                   &resume_index, 
                   NULL, NULL, NULL, 
                   dir, sizeof(dir),
                   &ms, NULL, NULL,
                   NULL, 0);
/* disabled, because transition between talkbox and voice UI clip is not nice */
#if 0 
    if (global_settings.talk_dir >= 3)
    {   /* "talkbox" enabled */
        char* last = strrchr(dir, '/');
        if (last)
        {   /* compose filename for talkbox */
            strncpy(last + 1, dir_thumbnail_name, sizeof(dir)-(last-dir)-1);
            talk_file(dir, enqueue);
            enqueue = true;
        }
    }
#endif
    talk_id(VOICE_EXT_BMARK, enqueue);
    talk_number(bookmark_id + 1, true);
    talk_id(LANG_BOOKMARK_SELECT_INDEX_TEXT, true);
    talk_number(resume_index + 1, true);
    talk_id(LANG_BOOKMARK_SELECT_TIME_TEXT, true);
    if (ms / 60000)
        talk_value(ms / 60000, UNIT_MIN, true);
    talk_value((ms % 60000) / 1000, UNIT_SEC, true);
}


/* ----------------------------------------------------------------------- */
/* This function retrieves a given bookmark from a file.                   */
/* If the bookmark requested is beyond the number of bookmarks available   */
/* in the file, it will return the last one.                               */
/* It also returns the index number of the bookmark in the file            */
/* ------------------------------------------------------------------------*/
static char* get_bookmark(char* bookmark_file, int bookmark_count)
{
    int read_count = -1;
    int result = 0;
    int file = open(bookmark_file, O_RDONLY);

    if (file < 0)
        return NULL;

    /* Get the requested bookmark */
    while (read_count < bookmark_count)
    {
        /*Reading in a single bookmark */
        result = read_line(file,
                           global_read_buffer,
                           sizeof(global_read_buffer));

        /* Reading past the last bookmark in the file
           causes the loop to stop */
        if (result <= 0)
            break;

        read_count++;
    }

    close(file);
    if (read_count == bookmark_count)
        return global_read_buffer;
    else
        return NULL;
}

/* ----------------------------------------------------------------------- */
/* This function takes a bookmark and parses it.  This function also       */
/* validates the bookmark.  Passing in NULL for an output variable         */
/* indicates that value is not requested.                                  */
/* ----------------------------------------------------------------------- */
static bool parse_bookmark(char *bookmark,
                           int *resume_index,
                           int *resume_offset,
                           int *resume_seed,
                           int *resume_first_index,
                           char* resume_file,
                           unsigned int resume_file_size,
                           int* ms,
                           int * repeat_mode, bool *shuffle,
                           char* file_name,
                           unsigned int max_file_name_size)
{
    /* First check to see if a valid line was passed in. */
    int  bookmark_len                = strlen(bookmark);
    int  local_resume_index          = 0;
    int  local_resume_offset         = 0;
    int  local_resume_seed           = 0;
    int  local_resume_first_index    = 0;
    int  local_mS                    = 0;
    int  local_shuffle               = 0;
    int  local_repeat_mode           = 0;
    char* local_resume_file          = NULL;
    char* local_file_name            = NULL;
    char* field;
    char* end;
    static char bookmarkcopy[MAX_BOOKMARK_SIZE];

    /* Don't do anything if the bookmark length is 0 */
    if (bookmark_len <= 0)
        return false;

    /* Making a dup of the bookmark to use with strtok_r */
    strncpy(bookmarkcopy, bookmark, sizeof(bookmarkcopy));
    bookmarkcopy[sizeof(bookmarkcopy) - 1] = 0;

    /* resume_index */
    if ((field = strtok_r(bookmarkcopy, ";", &end)))
        local_resume_index = atoi(field);
    else
        return false;

    /* resume_offset */
    if ((field = strtok_r(NULL, ";", &end)))
        local_resume_offset = atoi(field);
    else
        return false;

    /* resume_seed */
    if ((field = strtok_r(NULL, ";", &end)))
        local_resume_seed = atoi(field);
    else
        return false;

    /* resume_first_index */
    if ((field = strtok_r(NULL, ";", &end)))
        local_resume_first_index = atoi(field);
    else
        return false;

    /* Milliseconds into MP3.  Used for the bookmark select menu */
    if ((field = strtok_r(NULL, ";", &end)))
        local_mS = atoi(field);
    else
        return false;

    /* repeat_mode */
    if ((field = strtok_r(NULL, ";", &end)))
        local_repeat_mode = atoi(field);
    else
        return false;

    /* shuffle mode */
    if ((field = strtok_r(NULL, ";", &end)))
        local_shuffle = atoi(field);
    else
        return false;

    /* resume_file & file_name (for the bookmark select menu)*/
    if (end)
    {
        local_resume_file = strtok_r(NULL, ";", &end);

        if (end)
            local_file_name = strtok_r(NULL, ";", &end);
    }
    else
        return false;

    /* Only return the values the calling function wants */
    if (resume_index)
        *resume_index = local_resume_index;

    if (resume_offset)
        *resume_offset = local_resume_offset;

    if (resume_seed)
        *resume_seed = local_resume_seed;

    if (resume_first_index)
        *resume_first_index = local_resume_first_index;

    if (resume_file && local_resume_file)
    {
        strncpy(resume_file, local_resume_file,
                MIN(strlen(local_resume_file), resume_file_size-1));
        resume_file[MIN(strlen(local_resume_file), resume_file_size-1)]=0;
    }

    if (ms)
        *ms = local_mS;

    if (shuffle)
        *shuffle = local_shuffle;

    if (repeat_mode)
        *repeat_mode = local_repeat_mode;

    if (file_name && local_file_name)
    {
        strncpy(file_name, local_file_name,
                MIN(strlen(local_file_name),max_file_name_size-1));
        file_name[MIN(strlen(local_file_name),max_file_name_size-1)]=0;
    }

    return true;
}

/* ----------------------------------------------------------------------- */
/* This function is used by multiple functions and is used to generate a   */
/* bookmark named based off of the input.                                  */
/* Changing this function could result in how the bookmarks are stored.    */
/* it would be here that the centralized/decentralized bookmark code       */
/* could be placed.                                                        */
/* ----------------------------------------------------------------------- */
static bool generate_bookmark_file_name(char *in, char *out,
                                        unsigned int max_length)
{
    char* cp;

    if (!in || !out || max_length <= 0)
        return false;

    if (max_length < strlen(in)+6)
        return false;

    /* if this is a root dir MP3, rename the boomark file root_dir.bmark */
    /* otherwise, name it based on the in variable */
    cp = in;

    cp = in + strlen(in) - 1;
    if (*cp == '/')
        *cp = 0;

    cp = in;
    if (*cp == '/')
        cp++;

    if (strlen(in) > 0)
        snprintf(out, max_length, "/%s.%s", cp, "bmark");
    else
        snprintf(out, max_length, "/root_dir.%s", "bmark");

    return true;
}

/* ----------------------------------------------------------------------- */
/* Checks the current state of the system and returns if it is in a        */
/* bookmarkable state.                                                     */
/* ----------------------------------------------------------------------- */
/* Inputs:                                                                 */
/* ----------------------------------------------------------------------- */
/* Outputs:                                                                */
/* return bool:  Indicates if the system was in a bookmarkable state       */
/* ----------------------------------------------------------------------- */
static bool system_check(void)
{
    int resume_index = 0;
    struct mp3entry *id3 = mpeg_current_track();

    if (!id3)
    {
        /* no track playing */
        return false; 
    }

    /* Checking to see if playing a queued track */
    if (playlist_get_resume_info(&resume_index) == -1)
    {
        /* something bad happened while getting the queue information */
        return false;
    }
    else if (playlist_modified(NULL))
    {
        /* can't bookmark while in the queue */
        return false;
    }

    return true;
}